Change search
ReferencesLink to record
Permanent link

Direct link
A Comparison of EDMOS and Cascode Structures for PA Design in 65 nm CMOS Technology
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology. (Electronic Devices)
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis addresses the potential of implementing watt-level class-AB Power Amplifier (PA) for WLAN in 65 nm CMOS technology, at 2.4 GHz frequency. In total, five PAs have been compared, where the examined parameters were output power (Pout), linearity, power added efficiency (PAE), and area consumption. Four PAs were implemented using conventional cascode topology with different combination of transistors sizes in 65nm CMOS, and one PA using a high-voltage Extended Drain MOS (EDMOS) device, implemented in the same 65 nm CMOS with no process or mask changes. All schematics were created using Cadence Virtuoso CAD tools. The test benches were created using the Agilent's Advance Design System ( ADS) and simulated with the ADS-Cadence dynamic link.

The simulation results show that the EDMOS PA (L=350 nm) has the smallest area, but has harder to reach the required Pout. Cascode no. 3 (L= 500,260 nm) has the best Pout (29.1 dBm) and PAE (49.5 %). Cascode no. 2 (L= 500,350 nm) has the best linearity (low EVM). Cascode no. 1 (L=500,500 nm) has low Pout (27.7 dBm). Cascode no.4 (L=500,60 nm) has very bad linearity.

The thesis also gives an overview for CMOS technology, discusses the most important aspects in RF PAs design, such as Pout, PAE, gain, and matching networks. Different PA classes are also discussed in this thesis.

Place, publisher, year, edition, pages
2013. , 78 p.
Keyword [en]
RF, Power amplifier, Linearity, PAE, Reliabilty issues, EVM, Cascode, HV-MOS, EDMOS, Matching networks.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:liu:diva-97753ISRN: LiTH-ISY-EX--13/4715--SEOAI: diva2:650734
Subject / course
Electrical Engineering
2013-09-11, Filtret, Linköping University, Linköping, 13:59 (English)
Available from: 2013-09-26 Created: 2013-09-23 Last updated: 2013-09-26Bibliographically approved

Open Access in DiVA

A Comparison of EDMOS and Cascode Structures for PA Design in 65 nm CMOS Technology(3346 kB)782 downloads
File information
File name FULLTEXT01.pdfFile size 3346 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Search in DiVA

By author/editor
Al-Taie, Mahir Jabbar Rashid
By organisation
Electronic DevicesThe Institute of Technology
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 784 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 161 hits
ReferencesLink to record
Permanent link

Direct link